What This Calculator Does

This absolute value calculator separates three common tasks:

• Single number: calculate |x|, such as |-12.5| = 12.5.
• Basic expression: mark absolute-value sections inside arithmetic, such as |-3| + |4| = 7.
• Two-number difference: calculate |a-b|, turning a signed difference into number-line distance, such as |5-12| = 7.

The page updates automatically and shows supporting values such as the original result, distance, and magnitude. It is useful for learning, checking work, and quick real-number calculations—not for full algebra or symbolic solving.

When to Use It

• You need the size of a negative or positive real number, such as |-8|.
• You want to interpret |a-b| as distance between two points on a number line.
• You need to check a short arithmetic expression with absolute-value bars.
• You want original values and simple hints when explaining the concept.

Inputs Explained

Single Number |x|

Enter one finite real number. A positive input stays the same, a negative input loses its sign, and 0 remains 0.

Basic Expression